Go to the Ubuntu sound problems web site and follow instructions. http://ubuntuforums.org/showthread.php?t=205449
If that doesn't work, try the following:
sudo apt-get --purge remove linux-sound-base alsa-base alsa-utils alsa-source sudo apt-get install build-essential linux-headers-$(uname -r) module-assistant alsa-source sudo dpkg-reconfigure alsa-source sudo module-assistant a-i alsa-source reboot
Go to the Ubuntu sound problems web site and follow instructions. ubuntuforums. org/showthread. php?t=205449
http://
If that doesn't work, try the following:
sudo apt-get --purge remove linux-sound-base alsa-base alsa-utils alsa-source $(uname -r) module-assistant alsa-source
sudo apt-get install build-essential linux-headers-
sudo dpkg-reconfigure alsa-source
sudo module-assistant a-i alsa-source
reboot